Radar Mast & Final Assembly of Yacht

1. Radar Mast :

Max Expected Number of hours required to design- 1.5hrs

2) YACHT MODELLING

OBJECTIVE :

To model a Yacht using SolidWorks Part file, assemble all the individual parts using the SolidWorks Assembly file and perform attractive rendering operations using SolidWorks Visualize and/or PhotoView 360.

INTRODUCTION :

A yacht is a sail or power vessel used for pleasure, cruising, or racing. There is no standard definition, so the term applies to such vessels that have a cabin with amenities that accommodate overnight use. To be termed a yacht, as opposed to a boat, such a pleasure vessel is likely to be at least 33 feet (10 m) in length and may have been judged to have good aesthetic qualities.

Originally, all yachts were made of wood, using a wooden keel and ribs, clad with planks. These materials were supplanted with iron or steel in steam yachts. In the 1960s fiberglass became a prevalent material. These materials and others continue in use. Whereas yachts of 79 feet (24 m) and below may be constructed of fiberglass, larger yachts are more likely to be constructed of steel, aluminum or composite fiber-reinforced plastic.

DESIGN METHODOLOGY :

DESCRIPTION :

Rendering of the individual parts was done in SolidWorks Visualize Professional '19. The Real View graphics were enabled for efficient rendering.
No dedicated cameras and scenes were created for this purpose.

Setting up the Blueprints :

• All the blueprints were imported into a SolidWorks part file using the path : Tools - Sketch Tools - Sketch Picture.
• Appropriate positioning as well as scaling of the blueprints is very important and has to be done perfectly as shown.
• This Blueprint setup is then used to model all the parts.
  
  

Modelling the Propeller -

• A Propeller is a device with a rotating hub and radiating blades that are set at a pitch to form a helical spiral, that, when rotated, performs an action which is similar to Archimedes' screw.
  It transforms rotational power into linear thrust by acting upon a working fluid, such as water or air.
• The propeller is modelled simply by using solid modelling features suh as - Revolved Boss/Base, Extruded Cut, etc.
• Initially, a single blade is modelled using the Lofted Boss/Base feature.
  It is then using in the Ciruclar Pattern feature to model the rest of the blades.
• Fillets are added to remove off the sharp edges, provide appropriate curvature to the periphery of the blades and improve the outlook of the propeller.

Modelling the Radar :

• Marine Radars are X band or S band radars on ships, used to detect other ships and land obstacles, to provide bearing and distance for collision avoidance and navigation at sea.
  They are electronic navigation instruments that use a rotating antenna to sweep a narrow beam of microwaves around the water surface surrounding the ship to the horizon, detecting targets by microwaves reflected from them, generating a picture of the ship's surroundings on a display screen.
• The Radar is modelled very easily using the following features - Extruded Boss/Base, Cut Exrtude, Fillets, etc.
• Since, the radar is symmetric in shape, only haf the portion is modelled.
  The other half is simply mirrored using the Mirror feature. The Merge Solids option is enabled while doing so.
• A text is added on the surface just for the sake of a better and realistic outlook.
  The text feature can be found at the mentioned path :
  Tools - Sketch Entities - Text.
  This text is then projected on the radar surface using the Split Line command.

Modelling the Yacht Hull and the Garage door :

• A Hull is the watertight body of a ship or boat. The hull may open at the top (such as a dinghy), or it may be fully or partially covered with a deck.
  Atop the deck may be a deckhouse and other superstructures, such as a funnel, derrick, or mast. The line where the hull meets the water surface is called the waterline.
• Here, the hull is essentially modelled by Surface Modelling.
  The outer surfaces of the Hull are created using the features in the Surfaces tab.
• For this, the Project Curve feature along with the different sketch tools, is used to create the outer peripheries of the surfaces.
  Then, the surfaces are created using these curves and by using features such as Lofted Surface, Boundary Surface, Extruded Surface, Trim Surface, etc.
• The Port Holes are modelled by using the Swept Boss/Base features after using Extruded Cut.
• The railing is modelled by creating projected curves through different sketch tools and then by using the Swept Boss/Base command with the curves as the sweep path.
• Fillet is used at all the required places where sharp edges are to be avoided. Also, providing fillets around the windows gives a good aesthetic appeal to the model.
• The Anchor is modelled directly as a solid i.e by using the features such as - Extruded Boss/Base, Extruded Cut, etc.
• These two symmetric parts are then carefully knitted together using the feature Knit Surface.
  The Create Solid option is enabled to fill the inside portion of the Hull.
  While doing so, it is ensured that the knitting is done properly. This can be done by carefully looking at each and every edge. A perfectly knitted edge looks black in colour, while a blue edge means that there is no association between the two faces altogether.
• To give a more realistic outlook, decals are added on the deck surface as well as the stair surfaces.
  Since, the Hull is symmetric, only half the portion is modelled, the rest half is mirrored using the Mirror feature.
• Appearances is changed by providing colours at all the required faces. This gives the model a perfect and realistic look.

• Now, the Garage door is simply modelled using the garage portion which was carved out of the Hull.
• The unnecessary portion is removed off by using the Extruded Cut feature.
  Fillets were provided to blend the sharp edges.

Modelling the Seats :

• Seats are modelled either by solid features or by using surface features.
• There are three seatings in the model - Front, Middle and Rear.
• Here, the Front and the Rear seats are modelled by first creating the outer surfaces using the features of the Surface tab. Then by creating a solid after carefully knitting the surfaces together using the Knit Surface feature.

Front Seat :

Middle Seat :

Rear Seat :

Modelling the Superstructure :

• On water craft, the superstructure consists of the parts of the ship or a boat, including sailboats, fishing boats, passenger ships, and submarines, that project above her main deck.
  This does not usually include its masts or any armament turrets.
• Here, the Superstructure is also modelled by creating the outer surfaces first, just as we did in the case of Hull.
• These surfaces are then mirrored using the Mirror command and then knitted together properly with the Knit Surface.
• Here as well, the railings are modlled by using the Swept Boss/Base feature.
• The Jacuzzi is just a cutout with a surface at the top to represent the water-level.
  The surface is given a transparent appearance for this purpose.
• The window edges are blended using the Fillet feature to give a smooth appearance.
• The vipers are modelled uisng solid features such as Extruded Boss/Base, Extruded Cut, Swept Boss/Base, etc. along with appropriate Chamfers and Fillets.

Modelling the Radar Mast :

• The Mast of a sailing vessel is a tall spar, or arrangement of spars, erected more or less vertically on the centre-line of a ship or boat.
  Its purposes include carrying sails, spars, and derricks, and giving necessary height to a navigation light, look-out position, signal yard, control position, radio aerial or signal lamp.
  Large ships have several masts, with the size and configuration depending on the style of ship.
• Here, the mast consists of 2 light bulbs alongisde 2 antennas.
• This mast is easily modelled using the solid features such as Extruded Boss/Base, Revolved Boss/Base, Swept Boss/Base, etc.
• The horns are modelled by using the Shell feature. This feature essentially removes off the inside material out of a solid 3D part, thereby making it hollow.
• The Mirror feature is used to mirror symmetric entities.

Creating the Assembly :

• All these individual parts are then assembled together using the SolidWorks Assembly file.
• First off, the Hull is fixed at the proper location.
  Rest all the parts are then located with respect to this fixed Hull.
• Standard Mates such as Coincident, Tangent, Concentric, Parallel, etc are used to provide appropriate constraints.
• Shown below are the standard vies of the Assembly -

Front View :

Side View (Right) :

Top View :

Isometric View :

The Feature Tree of the Assembly file is shown below -

Rendering :

• Available Decals are added to enhance the outlook of few of the parts.
• The Yacht Assembly is rendered using the Add-In SolidWorks Visualize tool provided by SolidWorks.
• Proper Scene is created for the rendering.
  Appropriate Environment is set up for this purpose. Also, a suitable Backplate is chosen out of the library.
  Camera is set up by providing appropriate location.
• The Perspective view is enabled to ensure real-time look.
• Now, after providing suitable appearances the model is rendered.

Conclusion

After modeling of Yacht, I have learnt different tools used in SOLIDWORKS. Also, tools related to assembly and rendering.